Base-plate for railway or tramway sleepers.



C. P. SANDBERG. BASE PLATE FOR RAILWAY ORJRAMWAY SLEEPERS. I APPLICATION FILED MAY 24, 19'5- 1,178,351 Patented Apr. 4, 1916.

2 SHEETS-SHEET I.

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BASE PLATE FOR RAILWAY 0R TRAMWAY SLEEPERS. APPLlQATlON HL'ED M Af2. I915. LliififiL Patented Apr. 4,1916.

2 SHEETS-SHEET 2.

- To all whom 2'25 may concern.

- ers, of which the wise and sidewise rail and sleeper.

sleeper between the rail rests.

attention buti involve sleepers to as applied to a sleeper.A adapted to s'up-' port a flange rail B 7 clip to hold the The base plate UNITED STATES Parana emea cnarsrna PETER SANDBERG, OF LONDON ,YBENGLAND.

r BASE-PLATE Eon RAIL-WAY OR TRAMWAY SLEEPERS.

. Be it known that I, OHRISTER PETER SANDBERG, a subject ofjthe King of Great Britain, residing in London, England, have invented a certain newand useful Improved Base-Plate for Railway or Tramway Sleepfollowing is a specification. In order to distribute the loadon a rail- I way or tramway sleeper carrying a flange has been used on which the Such plate has always been held to the sleeper by bolts, screws orother separate pieces which not only re'quire periodical additional cost and labor. It has also been propose'cl with metal employ a base plate merely laid uponthe sleeper between metal lugs and held in position; by said lugs from both end movement. Thelugs in" such'an arrangement have alsobeen used for gripping the flangeof a flange-rail.

The. present invention provides a base plate for steel sleepers of the kind in which either a flange rail or a bull. head rail is held by a keyor wedge betweena part of the rail, preferably "the 'web,' and tongue turned up from the. metalof the sleeper.

It consists essentially in the combination with: a metal sleeper of the type mentioned of a base plate to'distribute the load upon rail a base plate" by the relativerelations of the rail, the base plate, and the sleeper. 'T

V The invention will be more particularly described withjreference to the accompanying drawings which show three-applications of the invention. I It v v Figure 1 is a' view showing the invention is a plan of same. Fig. 3 is a view showing the invention applied to another tiype of Fig. 4 is a plan 0 same. Fig.- 5 is a view showing another application of the invention. Fig. .6 1s a plan of 3th 0 i very similar inconstruct on to that shown same. I p v In Figs. 1 and 2 the invention is shownand having clipsf' C to flanges 13 of'the rail, a being driven under I one rail tightly in 'position..j E as applied to such. a sleeper is. simply laid inposition. ony thie' clips C andj'is formed at one ,0! both. sides --with shoulders F clip or hold the wedge or key D Specification of Letters Patent.

Application filed May 24, 1915. Serial No. 30377.

adapted to. embrace one or both tongues or clips C ends is greater than the width of the the sleeper adapted to be held .1n position I E.

' shallow groove G clination td the rail.

' clined .to .give a cant we ght of the rail ticularly applicable tongues" forming clamps or up. from the sa e slot'in the sleeperas de- Patented Apr. 4,1916.

.of the clips (1 for the purpose of preventingany movement of the plate E longitudinally of the rail. The clips C have at their lower ends a spacing which is greater than the width of the plate E whereby said plate may be initially adjusted to. a position most favorable to 1ts effective grip of the rail. base or .flange. The plate E may also if desired be provided with a shallow groove G adapted to receive the flange of the rail and to pre vent any movement of the plate longitudinally of the sleeper. The plate is held in position by the weight or pressure of the rail B upon it, which is increased by the pressure exerted by the wedge 01" key D through the flange b of the rail. Or, as shown, the wedge may press directly upon the plate Eas'well as upon the flange b.

In Figs. 3 and 4 the plate E is shown as applied to a. sleeper A in which the form'the jaws of a chair adapted to hold bull headrail B in the ordinary manner by means of awedge or key D adapted to engage the web of the rail. The base plate E is .appliedin'a mannersimilar to that shown in Figs! 1 and 2' being merely laid upon the sleeper between the jaws-.Cfl' whosespacing at their lowerlate shown with shoulders F formed onlyv at one side -to;embr ace one of the-jaws C.- The to receive the rail B may be g1ven an inclination as shownin this arrangement to give any required-cant or in- The plate is held ir. position-exactly as described with reference 'to"Figs."1 and 2.

In Figs. 5 and 6 the plate E is shown as applied to another type of sleeper having jaws C adapted to a flange rail B. The

plate E is applied in e same manner as a ove described and is in Figs 1 and 2; the groove G is shown in to the rail B and the down by the combinedan the pressure exerted through it of the key or wedge D and the distance'piece Hf Such a base plate is parscribed my; (ding application, Serial In this arrangement the plate is form a chair to receive when two or more aws are turned No. 28,806. It is shown as applied to such to distribute the load upon the sleeper and,

havin means for 006 eration with one of the aws and with the rail whereby it will be positively held in position.

2. The combination with a metal sleeper having spaced jaws which provide a rail chair, of a base plate interposed between said jaws and of less width than the space between the jaws at their lower ends whereby an initial adjustment of the position of said plate'may be made, said plate serving to distribute the load upon the sleeper and being shaped for cotiperation' with one of said jaws and with said rail whereby it is positively held in position.

3. The combination with a metal sleeper having spaced jaws which provide a rail chair, of a base plate interposed between said jaws and of less width than the space between the aws at their lower ends whereby an initial ad ustment of the position of said plate may be made), said plate serving to distribute the load upon the sleeper and having a groove to receive the base of the rail whereby the plate will be positively held by the rail against movement longitudinally ofthe sleeper.

Copies of this patent my be obtained for 4. The combination with a metal sleeper having spaced jaws which provide a rail chair, of a base plate interposed between said jaws and of less width than the space between the jaws at their lower endswhereby aninitial adjustment of the position of said plate may be made, said plate serving to distribute the load upon, the sleeper and having an inclined groove to receive the base of the rail 'whereby' the rail will have a certain cant and the plate will be positively held by the-rail against movement longitudinally of the sleeper.

5. The combination with a metal sleeper having a projection rigid therewith, of a base plate imposed upon said sleeper and adapted to be initially adjusted to a favorable position, said plate serving to distribute the load upon the sleeper and having shoulders to cooperate with said projection in positively preventing displacementof the plate longitudinally of the rail and having also a groove to receive the base of the rail whereby the plate will be held by the rail against displacement longitudinally of the sleeper.

6. The combination with a'metal sleeper, of a base plate loosely imposed thereon and adapted to be initially adjusted to a suitable position. said plate having means integral therewith for cooperation with the sleeper and with the rail to positively prevent its movement in any direction.-

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHRISTER PETERYSANDBERG.

Witnesses:

JOHN TEAGUE,

F. Fosoo;

five cents each, by addressing the Goinmissioner of Patents, Washington, D. G." 

